International Comfort Products IS203655708 WC SPST Pressure Switch - 0.65

The International Comfort Products IS203655708 is a single pole single throw (SPST) pressure switch designed for HVAC systems. This pressure-activated switch is calibrated to activate at 0.65 inches water column (WC), making it ideal for monitoring air pressure in furnaces and other heating equipment.

Key Features:

• SPST (Single Pole Single Throw) configuration for simple on/off control
• Pressure activation set point of 0.65 inches water column
• Designed for residential and light commercial HVAC applications
• Direct replacement for International Comfort Products furnace systems
• Monitors draft inducer and combustion air pressure

This pressure switch serves as a critical safety component in gas furnaces, ensuring proper draft and ventilation before allowing the heating cycle to proceed. When the pressure reaches the 0.65 WC threshold, the switch closes its contacts to signal the control board that adequate airflow is present.